Can't Update LMDE

[dmhm]

These are the Error Messages:

E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/
debian.linuxmint.com_latest_multimedia_dists_testing_main_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.

Solution?

TIA